Paper towel holder



FIG. 1 is a top perspective view of a paper towel holder showing my new design;

FIG. 2 is a front elevation view thereof, the rear elevation view, the left side elevation view and the right side elevation view are identical; and,

FIG. 3 is a top plan view thereof.

Broken lines in the drawings depict portions of the paper towel holder that form no part of the claimed design. 

CLAIM The ornamental design for a paper towel holder, as shown and described. 